Demountable rim for vehicle-wheels.



J. ROSENBAUM. DBMOUNTABLB RIM POR VEHICLE WHEELS.

f APPLIGATION FILED JULY 1o, 1912. ggga Patented A111222, 1913. z SHEETS-sum1,

.5 fag J. ROSENBAUM.

DEMOUNTABLE RIM POR VEHICLE WHEELS.

APPLIUATION HLM) JULY 1o. 1912.

15959365. Patented Apr, 22, 1913.

2 SHEETS-SHEET 2.

- separated from each other. n

tlon-on the line 7-5'7, Fig. 1. Fig. 8 is a sec- I JESSE ROSENAUM,A 0F MOUNT VERNON, INDIANA.

DEMOUNTABLE -RIM FOR VEHICLE-WHEELS.

Losanna.

Specification of Letters Patent.

Application tiled J'ulyvlO, 1912. Serial No. 708.7144.

To aZE whom if may concern v Be itknown that I, JESSE ROSENBAUM, a citizen of the United States, resident of Mount Vernon, in the county of Posey and State of Indiana, havemade a certain neiv and useful Invention in Demountable Rimsy I e .had to the accompanying drawing and to letters or figures of reference marked thereon, which form a part of this specification.

4Figure 1 is a side view of the invention as applied.4 Fig. 2 is a plan view of the same. r Fig. 3 is a similar vi'evv ofthe permanent rim.- Fig. 4 is a similar view. of the demountable rim. Figs. 5 and 6 are similar views of the sections of the demountable rim Fig. 7 is a section on the line.S-8, Fig. 4. Fig. 9 is a section on the line 99,I Fig. 5. Figs. 10 and 1 1 'are detail sectional views of one of the fastening 1 devices 'engaged and disengaged respectively With 'the recess of the permanent rim and with the lug of the demountable rim section.

4The object of the invention is mainly to provide'for Wheels of vehicles havingelastic tires supplementary. separabley tire-holc'ling .demountable rims, which 'can be quickly' operated; and the invention consists in the novel construction and combinations" of parts, as hereinafterset forth.

In the accompanying drawings, illustratingthe invention, the numeral 2 indicates the permanent rim of the wheel of a motor Aoperated vehicle; 3 a pneumatic tire and 4 `a separable and demountable tire-holding rim which is designed to surround the permanent rim. This is provided 1mth 'a circumferential flange 5 of about a half-inch in depth, extending outtvard around its iniside edge, this Aange serving as a lateral of the rim. These sections are designed to be )oined together on a central or intermediate plane of the rim, to hold the tire, and' are separable from each other. `Each section is provided With a suitable outer ti'ange, to provide for the attachment of the tire. The inner or meeting edges of the sections are tiush with each other, one of these sections, usually the inner one, being c provided with aN plurality of recesses S having offset holes or bearings 9, the other section having a similar number, usually tive, ofu angular catches 12 adapted to enter the recesses 8 and to engage the holes or bearings-9 when one of the sections is moved circularrly in relation to the other. In this Way it is designed to provide means for easily connecting the sections together ina secure .manner to form a complete rim, and for theirxquick separation,'one vfrom the other. The inner' section is also provided on its inside surface ivith several angular grooves 13, to engage' the studs orcatches 7 of rthe permanentrim, each groove having its outer portion opening on the outer edge of the section, and its inner portion at right angles to saidouter portion and extending in the direction ofthe circular `elements of the section and in the opposite direction to that of the catches 12 of the opposite section.

The outer section 'of the demountable rim is provided With lugs 14 projecting inrvard from its outer edgey and designed to engage the fastening devices 6 of the permanent.

Patented Apr. 22,1913. i

rim. The means for fastening these lugs,4

consist of spring catches.4pins or .bolts 15,

arranged in suitable bearings 1S in the edge -or outer marginal portion of the permanent vrim and designed to enter and engage recess bearings 16 in the edge of this permanent rim, saiddcatches, plus or bolts being held out. of engagement. when required b v suitcated in position to communicate with a slot 2 0 through the permanent rim, and said slot is made' long enough to alloiv for the circular movement of the demountable rim required in effecting its attachment tothe permanent rim.v 4

In order to put on a tire, the inner section, and the two halves of the demountable l rini. will be fastened together, forming a complete rim with a smooth interior adapted to' fit the outer or hearing surface of the permanent. rim. In putting this rim, with the engaged tire, on the Wheel, the Valve stem is introduced into the slot provided for it in thepermanentrim, and the deniountable rim is pushed on the permanent rimso thatits inner edge `Will engage the flange 5 and its angular'grooies will receive the catches 7 of the latter. This slot is inade long enough to allow for the circular movement of the' demountable rim, which is turned until these catches are locked in the angular grooves. At the same time the fastening devices 6 of the pernianent rim, being held out of engagement by thel spring catches 17, ivill allow the lugs 14 of the deinountable rim to enter the bearings ofthe latter, which will be automatically closed upon the Withdrawal of the spring catches. By such means the deiiiountable riin is adjusted to entirely surround the cylindrical'bearing face of the permanent rim, and is securely attached thereto.

VReversal of operation of the means described Will enable the operator to slide the demountable rim off the wheel and take it apart for the removal of the tire, When necessary for replacement or for purposes of ICpllll'l Having described the invention, what I claim and desire to secure by Letters Patent is: A v

l. In a vehicle wheel, a permanent rini having radial outwardly extending project-ions and at one side a stop shoulder and at the other side releasable stop devices, and a demountable tire-holding rim having contact at one side thereof with said stop shoulder and at its otherV side radial in- Wai'dljaY extending projections engaging said releasable stop devices, said deniountahl'e rim having laterally slidable engagement with the permanentI rim 'and .inner bayonet slots engaging said outwardly extending projections.

Q. In' a vehicle Wheel, a permanentl riin having radial outwardly extending projections, and at. one side a-stop shoulder and at the other side springacting releasahle stop devices, and a deinountable tire-holding rim having4 contact atI one side thereof with said stop shoulder and at its other side radial inwardly ext-ending projections engaging said releasahle stop devices, said deinountahle rim having laterallyslidahle en gagement with the permanentl rim and inner bayonet. slots engaging said outwardly extending proieetions, said permanentrim having releasahle spring-acting means to re` tain said stop devices in released position.l

In testimony whereof I affix my signature, in presence -of tivo Witnesses.

Jiissii RosENBaUM. 

